CN111121493A - High pressure head air heating unit - Google Patents

High pressure head air heating unit Download PDF

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Publication number
CN111121493A
CN111121493A CN201911404896.9A CN201911404896A CN111121493A CN 111121493 A CN111121493 A CN 111121493A CN 201911404896 A CN201911404896 A CN 201911404896A CN 111121493 A CN111121493 A CN 111121493A
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CN
China
Prior art keywords
air
chamber
pressure head
heating unit
shell
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201911404896.9A
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Chinese (zh)
Inventor
宋世果
黄伟
张立忠
刘戈
窦玉康
杨惠茹
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Zhongkuang Boneng Energy Saving Science & Technology Co ltd
Original Assignee
Beijing Zhongkuang Boneng Energy Saving Science & Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Beijing Zhongkuang Boneng Energy Saving Science & Technology Co ltd filed Critical Beijing Zhongkuang Boneng Energy Saving Science & Technology Co ltd
Priority to CN201911404896.9A priority Critical patent/CN111121493A/en
Publication of CN111121493A publication Critical patent/CN111121493A/en
Pending legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28CHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
    • F28C3/00Other direct-contact heat-exchange apparatus
    • F28C3/02Other direct-contact heat-exchange apparatus the heat-exchange media both being gases or vapours
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F1/00Ventilation of mines or tunnels; Distribution of ventilating currents
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F19/00Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
    • F28F19/01Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using means for separating solid materials from heat-exchange fluids, e.g. filters

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Ventilation (AREA)

Abstract

The invention discloses a high-pressure head air heating unit which comprises a shell, wherein an air inlet and a first air outlet are formed in the shell, an air inlet heating chamber, a supercharging air supply chamber and a silencing air outlet chamber which are communicated with each other are sequentially arranged in the shell along an air supply direction, the air inlet heating chamber is provided with the air inlet, a heater is arranged in the air inlet heating chamber, a fan is arranged in the supercharging air supply chamber, a silencing piece is arranged in the silencing air outlet chamber, and the silencing air outlet chamber is provided with the first air outlet. Its purpose is in order to provide a high-pressure head air heating unit, and its area is little, and the amount of wind is big, and the noise is little to can be with the cold and hot air intensive mixing of colliery air inlet shaft well head.

Description

High pressure head air heating unit
Technical Field
The invention relates to the field of air supply of coal mines, in particular to an air supply heating unit for a coal mine.
Background
The air heater for the coal mine air inlet well mainly comprises a steel pipe wound sheet type for supplying heat by steam, a steel pipe fin type for supplying heat by high-temperature hot water at 90-120 ℃ and a copper pipe fin type for supplying heat by a low-temperature medium at 40-50 ℃.
1. The copper tube fin type heat supply device has the advantages that the heat dissipation capacity of a single machine is small and is not more than 500kW, the installation quantity is large, and the installation occupied area is large due to the low-temperature medium of 40-50 ℃;
2. the copper tube fin type heat supply device for the low-temperature medium at 40-50 ℃ adopts axial flow fans for air supply, the number of the axial flow fans adopted by a single air heater is large, usually 4-9, the ventilation quantity is small, and the ventilation quantity is not more than 45000m3The noise is high and is more than 65dB, and the air outlet pressure head is small after heating and is 1-2 m/s;
3. the air speed is low, and cold and hot air is not well mixed in a wellhead room of the coal mine air inlet shaft, and the cold and hot air can generate shunting in the wellhead.
Disclosure of Invention
The invention aims to provide a high-pressure head air heating unit which has the advantages of small occupied area, large air volume and low noise and can fully mix cold air and hot air at the mouth of a coal mine air inlet shaft.
The high-pressure head air heating unit comprises a shell, wherein an air inlet and a first air outlet are formed in the shell, an air inlet heating chamber, a supercharging air supply chamber and a silencing air outlet chamber which are communicated with each other are sequentially arranged in the shell along an air supply direction, the air inlet heating chamber is provided with the air inlet, a heater is arranged in the air inlet heating chamber, a fan is arranged in the supercharging air supply chamber, a silencing piece is arranged in the silencing air outlet chamber, and the silencing air outlet chamber is provided with the first air outlet.
The shell comprises a framework and a shell, the shell is arranged on the framework, the framework is of a frame structure, and the shell is made of a waterproof heat-insulating material.
According to the high-pressure head air heating unit, the number of the air inlets is three, and each air inlet is provided with a metal filter screen.
The high-pressure head air heating unit is characterized in that the boosting air supply chamber and the silencing air outlet chamber are separated by the air chamber partition plate, the air chamber partition plate is provided with a through hole, the second air outlet of the fan is arranged at the through hole, and the shape and the size of the through hole are matched with those of the second air outlet.
The high-pressure head air heating unit is characterized in that the fan is a centrifugal fan or an axial flow fan, a motor of the fan is an explosion-proof motor, and a distribution box of the fan is an explosion-proof distribution box.
According to the high-pressure head air heating unit, the silencing piece is a plurality of silencing plates, each silencing plate is arranged along the air supply direction, and the plurality of silencing plates are arranged in parallel.
According to the high-pressure head air heating unit, the first air outlet is provided with the fireproof air adjusting door, and the first air outlet is further provided with the protective net.
The high-pressure head air heating unit is characterized in that an access door is arranged on the shell, and a bracket is arranged at the bottom of the shell.
The invention relates to a high-pressure head air heating unit, wherein a heater is a copper tube fin type heater.
Compared with the prior art, the high-pressure head air heating unit is characterized in that the air inlet heating chamber, the booster air supply chamber and the silencing air outlet chamber are arranged in one shell, and the heater, the fan and the silencing piece are sequentially arranged in the air inlet heating chamber, the booster air supply chamber and the silencing air outlet chamber, so that the high-pressure head air heating unit is small in occupied area, large in air volume and low in noise, and can fully mix cold air and hot air at the mouth of the coal mine air inlet shaft. When the air supply device is used, the two air supply heating units are symmetrically arranged at the wellhead of the air inlet shaft of the coal mine, so that cold and hot air in the air supply process can be more fully mixed.
The invention will be further explained with reference to the drawings.
Drawings
FIG. 1 is a front view of a high pressure head air heating assembly of the present invention;
FIG. 2 is a top plan view of the high pressure head air heating assembly of the present invention;
FIG. 3 is a front view of the internal structure of the high pressure head air heating assembly of the present invention;
FIG. 4 is a top view of the internal structure of the high pressure head air heating assembly of the present invention;
fig. 5 is a blowing path diagram of the present invention.
Detailed Description
As shown in fig. 1 and fig. 2-5, the high pressure head air heating unit of the present invention includes a housing 5, an air inlet 4 and a first air outlet 6 are provided on the housing 5, an air inlet heating chamber 1, a supercharging air supply chamber 2 and a silencing air outlet chamber 3 which are communicated with each other are sequentially provided in the housing 5 along an air supply direction, the air inlet 4 is provided on the air inlet heating chamber 1, a heater 11 is provided in the air inlet heating chamber 1, a fan 12 is provided in the supercharging air supply chamber 2, a silencing member is provided in the silencing air outlet chamber 3, and the first air outlet 6 is provided on the silencing air outlet chamber 3.
According to the high-pressure head air heating unit, the shell 5 comprises the framework and the shell, the shell is arranged on the framework, the framework is of a frame structure, the shell is made of a waterproof heat-insulating material, transportation is facilitated, mounting and dismounting (the high-pressure head air heating unit is suitable for coal mines), the high-pressure head air heating unit can be assembled in a vertically combined mode, mounting is simple and convenient, occupied area is small, and outdoor air can be mounted.
According to the high-pressure head air heating unit, three air inlets 4 are formed, and each air inlet 4 is provided with a metal filter screen. The metal filter screen is used for filtering dust and sundries, cold air enters the air inlet heating chamber 1 after being filtered by the air inlet 4, the air inlet is designed with a large air inlet, the air speed is low and is less than 1.5m/s, and the air inlet is not easy to carry the dust, the sundries and rain and snow. The metal filter screen adopts side-inserting type installation, and is convenient to detach and clean.
As shown in fig. 3 and fig. 4, the high pressure head air heating unit of the present invention is characterized in that the plenum chamber 2 and the muffling air outlet chamber 3 are separated by a chamber partition plate 15, the chamber partition plate 15 is provided with a through hole, the second air outlet 16 of the blower 12 is located at the through hole, and the through hole is matched with the second air outlet 16 in shape and size.
The high-pressure head air heating unit is characterized in that the fan 12 is a centrifugal fan or an axial flow fan, the motor 13 of the fan 12 is an explosion-proof motor, and the distribution box 8 of the fan 12 is an explosion-proof distribution box. In this embodiment, the fan 12 is a centrifugal fan with large air volume, high pressure head and low noise, and the maximum pressure head is 2700Pa and the maximum air volume is 130000m3And h, the negative pressure of the air inlet 4 is low, and the air speed of the second air outlet 16 is high and can reach 7-8 m/s.
The high-pressure head air heating unit is characterized in that the silencing piece is a silencing plate 14, the silencing plate 14 is provided in a plurality, each silencing plate 14 is arranged along the air supply direction, and the silencing plates 14 are arranged in parallel. The silencing air outlet chamber 3 is equivalent to an air outlet chamber of a wellhead air heating chamber, and air outlet pressure is balanced after static pressure silencing.
According to the high-pressure head air heating unit, the first air outlet 6 is provided with the fireproof air adjusting door 10, and the first air outlet 6 is further provided with the protective net. According to the invention, the fixed fireproof air adjusting door 10 can adjust the air speed of the first air outlet 6, so that cold air and hot air are mixed more uniformly, and meanwhile, the fixed fireproof air adjusting door is used for safety fire prevention and wind blocking, and the air inlet safety of a wellhead is enhanced.
The high-pressure head air heating unit is characterized in that an access door 7 is arranged on the shell 5, and a bracket 9 is arranged at the bottom of the shell 5.
The invention relates to a high-pressure head air heating unit, wherein a heater 11 is a copper tube fin type heater. The clean cold air filtered by the metal filter screen of the air inlet 4 is heated by a copper tube finned heater, the heater is set to be 6 rows of 13 sheets, 0.12 mm hydrophilic aluminum foil and 12.7x0.5 mm copper tube, a heating medium is 40-50 ℃, and the concentration of the heating medium is 30% of ethylene glycol solution. Because the intake is big, the heat transfer area of copper pipe fin type heater unit is big, and the heating capacity is big, and the unit maximum heating capacity is 2100 kW.
According to the invention, the air inlet heating chamber 1, the booster air supply chamber 2 and the silencing air outlet chamber 3 are arranged in the shell 5, and the heater 11, the fan 12 and the silencing piece are arranged in the air inlet heating chamber 1, the booster air supply chamber 2 and the silencing air outlet chamber 3 in sequence, so that the occupied area is small, the air volume is large, the noise is low, and cold and hot air at the mouth of the air inlet well of the coal mine can be fully mixed. When the air supply device is used, the two air supply heating units are symmetrically arranged at the wellhead of the air inlet shaft of the coal mine, so that cold and hot air in the air supply process can be more fully mixed.
The invention is provided with an air inlet heating chamber 1, the air is fed from a large air inlet, the air speed is low, and a metal filter screen is arranged at the air inlet 4, so that dust, sundries, rain and snow are not easy to be sucked into a heater 11 due to overlarge air speed, and the function of the air inlet heating chamber is the same as that of the air inlet chamber of the air heating chamber at the well mouth.
As shown in figure 5, the coal mine air inlet shaft air heating device is used for heating coal mine air inlet shaft air, cold air firstly enters an air inlet heating chamber 1 from a metal filter screen of an air inlet 4, the cold air is heated by a heater 11 and then is changed into hot air, the hot air enters a supercharging air supply chamber 2, a fan 12 pressurizes and discharges the hot air to a silencing air outlet chamber 3, the hot air entering the silencing air outlet chamber 3 is changed into high-speed hot air, the high-speed hot air and the cold air collide and are uniformly mixed, then enter a coal mine port and are sent to the underground.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.

Claims (9)

1. The utility model provides a high pressure head air heating unit which characterized in that: the air conditioner comprises a shell, wherein an air inlet and a first air outlet are formed in the shell, an air inlet heating chamber, a supercharging air supply chamber and a silencing air outlet chamber which are communicated with each other are sequentially arranged in the shell along the air supply direction, the air inlet heating chamber is provided with the air inlet, a heater is arranged in the air inlet heating chamber, a fan is arranged in the supercharging air supply chamber, a silencing piece is arranged in the silencing air outlet chamber, and the first air outlet is formed in the silencing air outlet chamber.
2. The high-pressure head air heating unit as claimed in claim 1, wherein: the shell comprises a framework and a shell, the shell is arranged on the framework, the framework is of a frame structure, and the shell is made of a waterproof heat-insulating material.
3. The high-pressure head air heating unit according to claim 1 or 2, characterized in that: the air inlet is three, and each air inlet is provided with a metal filter screen.
4. The high-pressure head air heating unit as claimed in claim 3, wherein: the supercharging air supply chamber and the silencing air outlet chamber are separated by an air chamber partition plate, a through hole is formed in the air chamber partition plate, a second air outlet of the fan is arranged at the through hole, and the shape and the size of the through hole are matched with those of the second air outlet.
5. The high-pressure head air heating unit as claimed in claim 4, wherein: the fan is a centrifugal fan or an axial flow fan, the motor of the fan is an explosion-proof motor, and the distribution box of the fan is an explosion-proof distribution box.
6. The high-pressure head air heating unit as claimed in claim 5, wherein: the noise reduction piece is a plurality of noise reduction plates, each noise reduction plate is arranged along the air supply direction, and the plurality of noise reduction plates are arranged in parallel.
7. The high-pressure head air heating unit as claimed in claim 6, wherein: the first air outlet is provided with a fireproof air adjusting door and a protective net.
8. The high-pressure head air heating unit as claimed in claim 7, wherein: the shell is provided with an access door, and the bottom of the shell is provided with a bracket.
9. The high-pressure head air heating unit as claimed in claim 8, wherein: the heater is a copper tube fin type heater.
CN201911404896.9A 2019-12-31 2019-12-31 High pressure head air heating unit Pending CN111121493A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911404896.9A CN111121493A (en) 2019-12-31 2019-12-31 High pressure head air heating unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911404896.9A CN111121493A (en) 2019-12-31 2019-12-31 High pressure head air heating unit

Publications (1)

Publication Number Publication Date
CN111121493A true CN111121493A (en) 2020-05-08

Family

ID=70506027

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911404896.9A Pending CN111121493A (en) 2019-12-31 2019-12-31 High pressure head air heating unit

Country Status (1)

Country Link
CN (1) CN111121493A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6139423A (en) * 1999-05-14 2000-10-31 Sikorsky Aircraft Corporation Noise reducing bleed air heat ejection device for a heating system
CN203615586U (en) * 2013-11-25 2014-05-28 北京矿大节能科技有限公司 Pitshaft freeze-proofing heater used in high and cold areas
CN206669914U (en) * 2017-04-27 2017-11-24 开平市高美空调设备有限公司 A kind of integral type subway air-conditioner set
CN108195071A (en) * 2018-02-01 2018-06-22 中环智创(北京)科技有限公司 A kind of antifreeze air heater of big temperature difference low-temperature
CN207540040U (en) * 2017-06-19 2018-06-26 广州锐劲特空调设备有限公司 A kind of Air conditioner cabinet consentrated air supply device
CN211977635U (en) * 2019-12-31 2020-11-20 北京中矿博能节能科技有限公司 High pressure head air heating unit

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6139423A (en) * 1999-05-14 2000-10-31 Sikorsky Aircraft Corporation Noise reducing bleed air heat ejection device for a heating system
CN203615586U (en) * 2013-11-25 2014-05-28 北京矿大节能科技有限公司 Pitshaft freeze-proofing heater used in high and cold areas
CN206669914U (en) * 2017-04-27 2017-11-24 开平市高美空调设备有限公司 A kind of integral type subway air-conditioner set
CN207540040U (en) * 2017-06-19 2018-06-26 广州锐劲特空调设备有限公司 A kind of Air conditioner cabinet consentrated air supply device
CN108195071A (en) * 2018-02-01 2018-06-22 中环智创(北京)科技有限公司 A kind of antifreeze air heater of big temperature difference low-temperature
CN211977635U (en) * 2019-12-31 2020-11-20 北京中矿博能节能科技有限公司 High pressure head air heating unit

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